I live close by.

If I use my FHA loan, after a year of living in the household, can I convert my FHA to my LLC and still reap the benefits of that 3.5% down payment? 

The IRS section 121 allows you to move out and rent your house for Up To 3 years, After you have lived in it for at least 2 years (hence the “2 out of the last 5 years) and be exempt from any capital gains tax.  

I live out of the country though so it makes things difficult.

Purchased with plan to live in permanently, put it as a STVR while traveling in our RV during the pandemic, and it did so well as a STVR that we decided to keep it as a rental and buy another cabin in Yosemite as our primary residence.

I've lived through a couple of these before. 

40k prefab20k electric and water hookup10k land dev100k 1-2 acreOrrrrr170k duplex with prefab home in back of yard ( section off drive into prefab and section off duplex yard)rent duplex - live in prefabthen rezone property for appraisal of two property

Many offer live demos, but it's going to take me forever to research these from scratch. 

One side is rented long term while I live in the other.

I am partial to east Dallas as that is where I live and house hacked for years (before it was called house hacking!)